Measurement Sphere Power(SPH) Cylinder Power(CYL) Axis(AX) ADD Prism Cylinder Mode Prism Mode Interpupillary Distance(PD) model : PLM-6100PD Etc Marking System Interface Size/Weight Display Printer Power Supply AC-DC Adaptor Power Consumption-25 ~ +25D (0.01/0.12/0.25D Steps) 0 ~ 10D (0.01/0.12/0.25D Steps) 0~180o (1oSteps) 0 ~ 10D (0.01/0.12/0.25D Steps) 0 ~ 7 -, +, MIX Rectangular / Polar 0 ~ 90mm (0.5mm Steps) Ink Pad RS-232C / USB 166(W) x 207.5(D) x 412.5(H)mm / 4.14kg 200(W) x 207.5(D) x 412.5(H)mm / 4.20kg(PD) 5.7inch touch-screen (640 x 480) Internal Printer 58mm AC 100-240V, 50/60Hz Approx. 10VA